کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1258368 | 971614 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fabrication and gas sensing property of honeycomb-like ZnO Fabrication and gas sensing property of honeycomb-like ZnO](/preview/png/1258368.png)
We report the structural characterization and proposed formation mechanism of honeycomb-like ZnO conglomerations fabricated by direct precipitation method. X-ray diffraction (XRD), energy-disperse X-ray spectrometry (EDS), scanning electron microscopy (SEM) showed that the as-prepared ZnO calcined at 700 °C were micron sphere particles with honeycomb-like structure. In the UV–vis absorbing spectrum, it was observed that there is a new additional absorption band at 260 nm, and it was speculated that the absorption may be caused by defects on the surface and interface of honeycomb-like ZnO. The as-products showed high sensitivity and short response time to sulfured hydrogen gas. These results demonstrate that honeycomb-like ZnO conglomerations are very promising materials for fabricating H2S gas sensors.
Journal: Chinese Chemical Letters - Volume 19, Issue 5, May 2008, Pages 599–603